Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung pha du snippets" » "dung phan du snippets", "dung phat du snippets", "dung ha du snippets", "dung pham duc snippets", "dung pham duy snippets", "dung phan duc snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung pha du snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung pha du snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung pha du snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung pha du snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.